Last for boots or shoes



(No Model.)

E.,0. KRENTLER 82; G. A. KRENT'LER.

LAST FOR BOOTS OR SHOES.

No. 456,994. Patented Aug. 4, 1891,

George A. Iran/Her UNITED STATES PATENT OFFIC".

EDYVIN O. KRENTLER AND GEORGE A. KRENTLER, OF DETROIT, MICHIGAN.

LAST FOR BOOTS OR SHOES.

SPECIFICATION forming part of Letters Patent No. 456,994, dated August4, 1891. Application filed April 28, 1890. Serial No. 349,813. (Nomodel.)

To all whom it may concern.-

Be it known that we, EDWIN O. KRENTLER and GEORGE A. KRENTLER, citizensof the United States, residing at Detroit, in the county of IVayne andState of Michigan, have invented certain new and useful Improvements inLasts for Boots or Shoes, of which the following is a specification,reference being had therein to the accompanying drawlngs.

This invention relates to new and, useful improvements in lasts forboots or shoes;

, and our invention is designed to construct a last of sufficientstrength and durability to be adapted for use with the well-knownheeling-machine in the operation of securing the heel t0 the shoe, whileat the same time it is cheap and light enough to be used in lieu of thecommon wooden last, and thus permit the heeling and finishing of theshoe on the same last.

This invention consists in the peculiar construction of a metallic heeland bushing, all as more fully hereinafter described, and shown in theaccompanying drawings, in which- Figure 1 is a vertical central sectionthrough a last, provided with our improved metallic heel and bushing.Fig. 2 is a detached perspective view of the bushing.

A is a wooden last of the ordinary construction.

B is a metallic heel provided with a solid stem 0, having an unbrokenface, which extends into the body of the last, affording a flat bearingfor the end of the heel-stem F.

D is a hollow metal bushing secured in an aperture formed in the comb ofthe last in line with the stem 0. This bushing is formed with atriangular, square, or other polygonal or irregular socket, and isprovided with a few spurs or irregularities E to hold it from turning inthe wood of the last. The bushing and stem of the metallic heel arepreferably made of the same diameter, so that by boring a hole throughthe last they may be both secured in the same hole.

In driving the bushing into place great care must be taken to adjust itproperly, so

that all the dimensions of the last are correspondingly enlarged ordiminished, and therefore in every last the distance between the heeland the comb of the last necessarily differs in different sizes, and ithas always been necessary in other constructions of lasts to reduce thisdistance to a uniform height. This is entirely obviated in ourconstruction, as the pressure of the heeling-machine isbrought upon themetallic heel, and through the stem of the metallic heel it is directlyreceived by the pin F of the heeling-machine, the latter being simplymade long enough so as not to bear against the comb of the last. Thus nopressure is brought upon the last at all, and if the metallic heel, andstem 0 are strong enough the last will stand anyamount of wear and tearwithout being in any way injuriously affected.

The metallic heel may be held in position by the frictional engagementof the stem 0 in the hole of the last, or, if desired, it may befastened additionally by a few screws.

The spirit of our invention consists in making a last with a strong andsubstantial metallic heel, in combination with the pin F of aheeling-machine yoke adapted to directly bear again st such heel-plateand with a bushing adapted to hold the last in its proper alignment.

That we claim as our invention is- The combination, with a last having avertical aperture extending entirely through the heel thereof, of ametallic heel-plate secured to said heel and provided with an integralextension into the aperture having an unbroken faceaffording a bearingfor the pin, of a beefing-machine having a corresponding end Intestimony whereof We afiix our signatures and a metallic bushing in theopposite end of in presence of two witnesses.

the aperture and extending toward but not H to the stem of theheel-plate, and having an irregularity in the bore and on its exteriorfor co-operating' with corresponding construe- Witnesses:

tions in the last and pin of the hee1ingma- WILLIAM F. BOEBERITZ,

chine, substantially as described. HENRY G. YOUNG.

